TextSecure encrypts your text messages over the air and on your phone. It’s almost identical to the normal text messaging application, and is just as easy to use.

TextSecure Provides:

A secure and private replacement for the default text messaging app.

All messages are encrypted locally, so if your phone is lost or stolen, your messages will be safe.

Messages to other TextSecure users are encrypted over the air, protecting your communication in transit.

TextSecure is Free and Open Source, enabling anyone to verify its security by auditing the code.

TextSecure is the only Android private SMS/MMS messenger replacement that uses open source peer-reviewed cryptographic protocols to keep your messages safe. Rather than simply pretending to hide your texts by putting them in another place, TextSecure uses cryptography to ensure that they remain truly secure.